User blog comment:Boybunny6262/Anyone help me with stuff?/@comment-31478262-20170618180643

HA is a 1/512 chance with the ability charm it's a 1/256 chance when hatching eggs. Also you have no chance of encountering wild pokemon with HA's unless you have the gamepass (not sure what the chance would be with wild's but probably the same as hatching 1/256)